CE Mark on Literature/Manuals

For unintentional and intentional radiators: Which specific standard states the requirements for the CE mark on packaging, data sheets and manuals? Besides the CE mark on equipment, I've been told that there are requirements for statements in manuals and on literature (data sheets) declaring

Re: Training for Engineers

Compatible Electronics can provide in-house EMC/EMI training seminars custom designed to fit your company's needs. Compatible Electronics also offers reugular EMI/EMC Design Seminars. The next seminars are to be as follows: * San Diego, Ca. Sept. 17-19, 1996 * San Jose, Ca. Oct. 8-10, 1996

RE: Why 42.4AC\ 60VDC

Bob, A long time ago, before EDP (now ITE) equipment, the ground rules for maximum voltage of Class 2 circuits were defined at UL as 30 V rms, based on the Class 2 limits defined in the National Electrical Code at that time (This was before NEC Class 3 circuits). So that definition took care

Survey: Experiences with EMI Consultants

I am wondering if anyone has had experience with hiring EMI/EMC consultants to solve their problems and what sort of results they have obtained. I would be very interested in any details that anyone might be able to provide. For example, did you use a consultant after the system was prototyped

IEC-1000-3 and 'the special waveshape'

The limits permitted for Class D equipment, which is the special waveshape of current associated with a full-wave rectifier and capacitor input filter, is given in Table 3 of IEC-1000. Table 3 provides 2 limits for each harmonic, an absolute maximum and a power-weighted maximum based on the real

RE: Training for Engineers

To: emc-p...@majordomo.ieee.org@INTERNET; rdsch...@amp.com@INTERNET From: Clement_D on Fri, Jul 12, 1996 1:11 PM Subject: RE: Training for Engineers I have attended seminars by UL, Don White Associates and BHS International that I was quite happy with. Dave Clement Motorola ISG

Re: IEC 1000-3-2, Figure 1

Peter Goodwin asks whether the special wave shape in IEC 1000-3-2 should be voltage. The answer is no. It is truly a requirement based on current. The envelope is centered on the peak value of the input current waveform WITHOUT REGARD for the voltage waveform or any phase difference that

RE: Why 42.4AC\ 60VDC

Hello again, I had previously asked for references to an alleged occupational requirement for a maximum touchable voltage of 24V and I thank you for your responses. I saw nothing concrete which gave legitimacy for a 24V limit. I found the references to the telephone company interesting. I

IEEE 1996 International Symposium on EMC/Second Posting

For those of you interested: The 1996 IEEE International Symposium on EMC will be held this year at the Santa Clara Convention Center, Santa Clara California, August 19-23. If you have access to the internet you will find all the information you need on our WEB page @

Training for Engineers

From: Ron Schaible Voice:717.592.3003 Director, Global SafetyFax: 717.592.4218 Mail Stop 004-003 AMP11610 Internet: rdsch...@amp.com Subject: Training for Engineers I am looking for training opportunities for design engineers to build their

Re: Transformer requirements in IEC950

List-Post: emc-pstc@listserv.ieee.org Date: 11 Jul 96 20:21:26 EDT From: Egon H. Varju 73132.2...@compuserve.com To: INTERNET:jeich...@statpower.com jeich...@statpower.com Cc: IEEE emc-p...@ieee.org Subject: Re: Transformer requirements in IEC950 Hi Jim, 1. To the best of my knowledge, you would

Re: IEC 1000-3-2, Figure 1

Hi Peter You wrote: My copy of the IEC 1000-3-2 harmonic current limits standard is dated first edition 1995-3. I refer to Figure 1 (page 17), entitled Envelope of the input current to define the 'special wave shape' and to classify equipment as Class

Re: Why 42.4AC\ 60VDC

Well, heck, why didn't you say so in the first place? If you are talking about a workplace practice with a possible exposure, you go to OSHA, not UL, ANSI, etc. 29CFR 1910.303(g)(2)(i)live parts of electric equipment operating at 50 volts or more shall be guarded. Note that it does not

Re: Transformer requirements in IEC950

Hi Jim, 1. To the best of my knowledge, you would have great difficulties convincing ALL the agencies that any form of varnish impregnation reliably complies with Clause 2.9.7. This is not to say that the concept is invalid; it's just that many agencies are not convinced ... 2. On the other

re:Mexican Product Safety (NOM)

Safety, as we have been recently instructed, is the LAW in Mexico. Interpret that as you see fit. Most of what has recently been posted wrt getting local help with your certification (by a Mexican lab) is valid and is likely a necessary evil for the time being. NOM-019 is based